An old engraving of a simple lever pyrometer. It is from Victorian book of the 1890s on sports, games and pastimes. Heating the horizontal metal bar (here with a flame from a Bunsen burner) makes the bar expand. It presses against a lever (left), which moves a pointer along a measuring scale. An immovable wooden prop (right) holds the bar in place. A pyrometer is a type of remote-sensing thermometer used to measure the temperature of an object. Modern devices determine from a distance the temperature of an object’s surface from the thermal radiation emitted, known as pyrometry or radiometry.
An old engraving of a simple lever pyrometer. It is from Victorian book of the 1890s on sports, games and pastimes. Heating the horizontal metal bar (here with a flame from a Bunsen burner) makes the bar expand. It presses against a lever (left), which moves a pointer along a scale that serves as a measuring index. There is an immovable wooden prop (right) holds the bar in place. A spring on the pointer pushes it back once the bar cools. A pyrometer is a type of remote-sensing thermometer used to measure the temperature of an object. Pyrometers take various forms. Modern devices determine from a distance the temperature of an object’s surface from the amount of the thermal radiation emitted, a process known as pyrometry and sometimes radiometry.
Size: 3307px × 2267px
Location:
Photo credit: © M&N / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1800s, 19th, apparatus, bar, black, bunsen, burner, calculate, century, device, distant, drawing, early, engraving, equipment, expand, expansion, flame, give, heat, historical, hot, illustration, instrument, lever, line, machine, measure, measuring, mechanical, metal, nineteenth, nostalgic, object, physics, pyrometer, pyrometry, radiate, radiation, radiometry, remote, science, scientific, sensing, temperature, therma, victorian, vintage, white
